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Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II.

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Title: Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II.
Authors: Agrawal, A.1 (AUTHOR), Alenkov, V. V.2 (AUTHOR), Aryal, P.3 (AUTHOR), Beyer, J.4 (AUTHOR), Bhandari, B.5 (AUTHOR), Boiko, R. S.6,7 (AUTHOR), Boonin, K.8 (AUTHOR), Buzanov, O.2 (AUTHOR), Byeon, C. R.3 (AUTHOR), Chanthima, N.8 (AUTHOR), Cheoun, M. K.9 (AUTHOR), Choe, J. S.10 (AUTHOR), Choi, Seonho11 (AUTHOR), Choudhury, S.1 (AUTHOR), Chung, J. S.12 (AUTHOR), Danevich, F. A.6,13 (AUTHOR), Djamal, M.14 (AUTHOR), Drung, D.4 (AUTHOR), Enss, C.15 (AUTHOR), Fleischmann, A.15 (AUTHOR)
Source: European Physical Journal C -- Particles & Fields. Feb2025, Vol. 85 Issue 2, p1-13. 13p.
Subjects: Housing, Alpha rays, Physical sciences, Low temperatures, Neutrinoless double beta decay, High temperatures
Abstract: The AMoRE collaboration searches for neutrinoless double beta decay of 100 Mo using molybdate scintillating crystals via low temperature thermal calorimetric detection. The early phases of the experiment, AMoRE-pilot and AMoRE-I, have demonstrated competitive discovery potential. Presently, the AMoRE-II experiment, featuring a large detector array with about 90 kg of 100 Mo isotope, is under construction. This paper discusses the baseline design and characterization of the lithium molybdate cryogenic calorimeters to be used in the AMoRE-II detector modules. The results from prototype setups that incorporate new housing structures and two different crystal masses (316 g and 517–521 g), operated at 10 mK temperature, show energy resolutions (FWHM) of 7.55–8.82 keV at the 2.615 MeV 208 Tl γ line and effective light detection of 0.79–0.96 keV/MeV. The simultaneous heat and light detection enables clear separation of alpha particles with a discrimination power of 12.37–19.50 at the energy region around 6 Li (n , α) 3 H with Q-value = 4.785 MeV. Promising detector performances were demonstrated at temperatures as high as 30 mK, which relaxes the temperature constraints for operating the large AMoRE-II array. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II.
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  Data: <searchLink fieldCode="AR" term="%22Agrawal%2C+A%2E%22">Agrawal, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alenkov%2C+V%2E+V%2E%22">Alenkov, V. V.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aryal%2C+P%2E%22">Aryal, P.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Beyer%2C+J%2E%22">Beyer, J.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bhandari%2C+B%2E%22">Bhandari, B.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Boiko%2C+R%2E+S%2E%22">Boiko, R. S.</searchLink><relatesTo>6,7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Boonin%2C+K%2E%22">Boonin, K.</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Buzanov%2C+O%2E%22">Buzanov, O.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Byeon%2C+C%2E+R%2E%22">Byeon, C. R.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chanthima%2C+N%2E%22">Chanthima, N.</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheoun%2C+M%2E+K%2E%22">Cheoun, M. K.</searchLink><relatesTo>9</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Choe%2C+J%2E+S%2E%22">Choe, J. S.</searchLink><relatesTo>10</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Choi%2C+Seonho%22">Choi, Seonho</searchLink><relatesTo>11</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Choudhury%2C+S%2E%22">Choudhury, S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chung%2C+J%2E+S%2E%22">Chung, J. S.</searchLink><relatesTo>12</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Danevich%2C+F%2E+A%2E%22">Danevich, F. A.</searchLink><relatesTo>6,13</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Djamal%2C+M%2E%22">Djamal, M.</searchLink><relatesTo>14</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Drung%2C+D%2E%22">Drung, D.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Enss%2C+C%2E%22">Enss, C.</searchLink><relatesTo>15</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fleischmann%2C+A%2E%22">Fleischmann, A.</searchLink><relatesTo>15</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Feb2025, Vol. 85 Issue 2, p1-13. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Housing%22">Housing</searchLink><br /><searchLink fieldCode="DE" term="%22Alpha+rays%22">Alpha rays</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+sciences%22">Physical sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Low+temperatures%22">Low temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Neutrinoless+double+beta+decay%22">Neutrinoless double beta decay</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink>
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  Data: The AMoRE collaboration searches for neutrinoless double beta decay of 100 Mo using molybdate scintillating crystals via low temperature thermal calorimetric detection. The early phases of the experiment, AMoRE-pilot and AMoRE-I, have demonstrated competitive discovery potential. Presently, the AMoRE-II experiment, featuring a large detector array with about 90 kg of 100 Mo isotope, is under construction. This paper discusses the baseline design and characterization of the lithium molybdate cryogenic calorimeters to be used in the AMoRE-II detector modules. The results from prototype setups that incorporate new housing structures and two different crystal masses (316 g and 517–521 g), operated at 10 mK temperature, show energy resolutions (FWHM) of 7.55–8.82 keV at the 2.615 MeV 208 Tl γ line and effective light detection of 0.79–0.96 keV/MeV. The simultaneous heat and light detection enables clear separation of alpha particles with a discrimination power of 12.37–19.50 at the energy region around 6 Li (n , α) 3 H with Q-value = 4.785 MeV. Promising detector performances were demonstrated at temperatures as high as 30 mK, which relaxes the temperature constraints for operating the large AMoRE-II array. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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